[open] Stop Signal Task

S_Burton

Hey,

I'm currently making a stop signal task using open sesame. Currently my stop signal, an image is displayed on all trials, but I only need it displaying on 25% of trials. How can this be done? I assume I need an inline script, but what code should I use?

thanks

Sam

sebastiaan

Hi Sam,

If you look under Menu → Tools → Example experiments, you will see that there's a Stop Signal Task for your inspiration

Cheers,
Sebastiaan

S_Burton

Hi Sebastiaan,

thanks for that, figured out how it's done now.

I loaded the experiment onto a phone (Moto G/android) and tried to open my experiment with the opensesame app. In the files it came out with an exception message of "'module' object has no attribute 'QByteArray'" any idea how to fix this? Or what part of the task could be the issue?

Thanks

Sam

S_Burton

This is from the debug window:

/sdcard/opensesame-autorun.yml
/mnt/sdcard/opensesame-autorun.yml
Launching opensesame_resources/android/menu.osexp
openexp.sampler._legacy.init_sound(): sampling freq = 48000, buffer size = 1024
experiment.run(): experiment started at Mon Sep 3 14:06:27 2018
experiment.run(): disabling garbage collection
opened /sdcard/opensesame-settings.txt for reading
experiment_folder = /sdcard/
logfile_folder = /sdcard/
opened /sdcard/opensesame-settings.txt for writing
experiment.run(): experiment finished at Mon Sep 3 14:06:34 2018
experiment.end(): enabling garbage collection
Traceback (most recent call last):
File "opensesame/main.py", line 111, in main
File "opensesame/libopensesame/experiment.py", line 138, in init
File "opensesame/libopensesame/item.py", line 64, in init
File "opensesame/libopensesame/experiment.py", line 343, in from_string
File "opensesame/libopensesame/item_store.py", line 164, in new
osexception:
Failed to load plugin 'coroutines'

item-stack:
exception type: AttributeError
exception message: 'module' object has no attribute 'QByteArray'
time: Mon Sep 3 14:06:35 2018

Traceback:
File "opensesame/libopensesame/item_store.py", line 161, in new
File "opensesame/libopensesame/plugins.py", line 361, in load_plugin
File "opensesame/libopensesame/plugins.py", line 338, in import_plugin
File "opensesame/opensesame_plugins/coroutines/coroutines.py", line 21, in
File "opensesame/opensesame_plugins/coroutines/oscoroutines/init.py", line 23, in
File "opensesame/opensesame_plugins/coroutines/oscoroutines/_tree_overview_adapter.py", line 21, in
File "opensesame/libqtopensesame/widgets/tree_overview.py", line 22, in
File "opensesame/libqtopensesame/misc/config.py", line 42, in
AttributeError: 'module' object has no attribute 'QByteArray'

Launching /sdcard/SST V1.osexp

AKK

Hi,

I have the same issue with my Xp on android. Did you find a solution?

# AttributeError: 'module' object has no attribute 'QByteArray' #

coroutines seems not working with droid backend.

S_Burton

hey,

no couldn't find one in the end.

If you're willing to test on iphones, you can use Inquisit player to create the task. Which is currently what I'm doing and have participants use their own phones.